Seat and back of chair



FIG. 1 is a front perspective view showing my new design.

FIG. 2 is a front view thereof.

FIG. 3 is a left end view thereof.

FIG. 4 is a right end view thereof.

FIG. 5 is a top view thereof.

FIG. 6 is a bottom view thereof.

FIG. 7 is a rear view thereof; and,

FIG. 8 is a rear perspective view thereof. 

CLAIM The ornamental design for a seat and back of chair, as shown and as described. 